Definition: In this task, you are given an input list A. You need to extract and sort the unique digits used in the list in ascending order. Return -1 if there is no digit in the list.
Input: ['399', '47', '225', '143', 'p', '441', '111', 'u', 'j', '421']

1, 2, 3, 4, 5, 7, 9